#region License
/*
* Copyright 2002-2009 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#endregion
using System;
using System.Runtime.Serialization;
namespace Spring.Expressions{
/// <summary>
/// Base class for binary operators.
/// </summary>
/// <author>Aleksandar Seovic</author>
[Serializable]
public abstract class BinaryOperator : BaseNode
{
/// <summary>
/// Create a new instance
/// </summary>
protected BinaryOperator()
{}
/// <summary>
/// Create a new instance with the supplied operands
/// </summary>
/// <param name="left"></param>
/// <param name="right"></param>
protected BinaryOperator(BaseNode left, BaseNode right)
{
base.addChild(left);
base.addChild(right);
}
/// <summary>
/// Create a new instance from SerializationInfo
/// </summary>
protected BinaryOperator(SerializationInfo info, StreamingContext context)
: base(info, context)
{}
/// <summary>
/// Gets the left operand.
/// </summary>
/// <value>The left operand.</value>
public BaseNode Left
{
get { return (BaseNode) this.getFirstChild(); }
}
/// <summary>
/// Evaluate the left operand
/// </summary>
protected object GetLeftValue(object context, EvaluationContext evalContext)
{
return GetValue(Left, context, evalContext);
}
/// <summary>
/// Gets the right operand.
/// </summary>
/// <value>The right operand.</value>
public BaseNode Right
{
get { return (BaseNode) this.getFirstChild().getNextSibling(); }
}
/// <summary>
/// Evaluate the left operand
/// </summary>
protected object GetRightValue(object context, EvaluationContext evalContext)
{
return GetValue(Right, context, evalContext);
}
}
}
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